transparent socks redirector Apache License

I开发者_运维知识库'm currently creating an Android application thaw will set http, https, socks and ftp transparent proxy configuration. I found existing application and I tried to use their socks redirector but lately I found out that it is under GNU license.

Are they any socks redirector under Apache License? I researched and I found some but under GNU/GPL.

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Do you plan on modifying the GPL'd application or simply use it? If you are utilizing the application and not linking it to your code, I think you can still release your application as a commercial product and use the GPL's application.